Valve | |
| URL: | http://www.valvesoftware.com |
Top games from this developer:
| 1 | Half-Life 2 | 2004 |
| 2 | Half-Life | 1998 |
| 3 | Counter-Strike | 1999 |
| 4 | Counter-Strike: Source | 2004 |
| 5 | Portal | 2007 |
| 6 | Left 4 Dead | 2008 |
| 7 | Team Fortress 2 | 2007 |
| 8 | Team Fortress Classic | 1999 |
| 9 | Half-Life 2: Episode One | 2006 |